基于相量测量单元录波数据的南方电网频率特性分析  

Analysis on Frequency Characteristics of China Southern Power Grid Based on PMU Record Data

作　　者：赵勇 周剑[2] 吴俊[2] 苏寅生[2] 汪皓[2] 刘春晓[2] 

机构地区：[1]南方电网科学研究院,广州510080 [2]中国南方电网电力调度通信中心,广州510623

出　　处：《南方电网技术》2010年第5期15-19,共5页Southern Power System Technology

摘　　要：准确地掌握电网的频率特性,是采取相关措施确保电网安全稳定和经济运行的基础。利用相量测量单元(PMU)录波数据,通过BPA仿真,分析了南方电网2010年1月份的13次机组跳闸故障。结果显示,南方电网采用以下模型可以基本上反映系统的频率特性:对实测过模型参数的机组,其调速系统采用实测模型;未实测的其余机组的调速系统采用经典模型,但死区设置为±0.05 Hz,调差系数设置为约0.164;负荷的有功功率频率因子取4.0。但2010年1月份的各次跳机事件的功率损失和频率变化量相对较小,由此得出的仿真模型对于大扰动是否适应还有待验证。To understand Accurately the frequency characteristics of a power grid provides basis for taking measures to ensure its safety and stability as well as economical operation.Based on PMU recorded data and with BPA,this paper analyzes the generator-triping accidents of 13 times occured in China Southern Power Grid（CSG） in January 2010.The results show that in view of frequency,CSG can basically be characterized with the following models： on-site measured models for the governor system of generators of which the model parameters have been tested,classical models with ±0.05 Hz of dead-band setting and 0.164 of frequency bias coefficient for the governor system of generators not be tested,and 4.0 of frequency coefficient for active power loads.The proposed models,however,are still to be validated for the situation where large disturbances happen as these models are from the data in January 2010 when the power unbalance and frequency variation of the generator-triping accidents are relatively small.

关 键 词：南方电网 频率特性 计算模型 相量测量单元 BPA 

分 类 号：TM712[电气工程—电力系统及自动化]